11 h 10 min, 22 févr. 1915 ans - Germany declared unrestricted submarine warfare (first declaration) - Feb 22, 1915
Description:
Unrestricted submarine warfare was first introduced in World War I in early 1915, when Germany declared the area around the British Isles a war zone, in which all merchant ships, including those from neutral countries, would be attacked by the German navy.Ajouté au bande de temps:
Date:
11 h 10 min, 22 févr. 1915 ans
Maintenaint
~ Il y a 109 ans
